Punching-machine



(No Model.) 3 Sheets-Sheefl.

E. H. PHIPPS.

PUNGHING MACHINE. No. 340,817. Patented Apr. 27, 1886.

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- B. H. PHIPPS. PUNCHING MACHINE.

No. 340,817; Patented Apr. 27, 1886.

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(No Model.) 3 Sheets-Sheet 3.

E. H. PHIPPS.

PUNGHING MACHEIINE.

Patented Apr. 27 1886.

I No. 340,817.

WITNESSES UNITED STATES PATENT OFFICE.

EDXVARD H. PHI PPS OF NEW HAVEN, CONNECTICUT.

PUNCHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 340,817, dated April 27, 1886.

Application filed Octoberifl, 1885. Serial No. 181,084. (No model.)

To all whom it may concern:

Be it known that I, EDWARD H. PHIPPS, of New Haven, in the county of New Haven, and in the State of Connecticut, have invented certain new and useful Improvements in Punching-hilachines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which- Figure I shows a view in front elevation of my punching-machine; Fig. II, a plan view of the same; Fig. III, an end view of the same; Fig. IV, a detail view in elevation of the mechanism for driving the fced rolls, and Fig. Va vertical sectional view on line at .e of Fig. 1.

Letters of like name and kind refer to like parts in each of the figures.

The object of my invention is to provide an improved punchirig-machine; and to this end my invention consists in the construction, arrangement, and combination of parts, as hercinafter specified, and more particularly poi nted out in the claims.

My invention relates to that class of punching-machines in which it is desirable that the punches should be kept continuously at work and the metal to be punched should be automatically fed up to and under the punches as, for instance, in the case of machines for punching rivct-holesin sh'cet'iron to be riveted into pipe, or for punching an y shapes or blanks out of sheet-metal strips.

In the drawings, A designates the bed or table of the machine, to be supported on suitable legs, as shown, or otherwise, as desired. Upon this bed, which has the longitudinal opening A, with vertical sides, rest the two heads B C, containing and carrying the punching mechanism and devices. Of these, one, the head C, is preferably made stationary, being bolted or otherwise fastened to the bed. The punch carried by this head is, as shown, on the inner side of the head, so as to be in position to punch the holes along the outer edge of a sheet fed through the machine.

The head B is movable along the bed, and has a portion, 13, extending down and fitting between the inner sides-of the longitudinal opening A in the bed, so as to hold the head most steadily and firmly in any position along the bed, and to guide it as it is movedgalong ing the punches.

the latter. Through this portion B is tapped the adj llShlllg-SCLCW S, which extends centrally and longitudinally between the sides of the opening A, and at one end is journaled in a bearing, 8, and at the other has an unthreaded shank or extension journaled in and extending through the end of the bed. Upon the outer end of this plain portion of the screw is the hand-wheel S, by which the screw can be rotated, as desired, to adjust the head Bin either direction along the bed. The punch in this head is, as shown, on the side toward head C, so that both punches can be made to operate at the same time upon opposite edges of a sheet of metal fed through the machine between the heads.

To operate the punches, I provide a longitudinal shaft, 1), above the bed A, journaled at one. end in a bearing, (1, on a suitable standard, D, extending up from the bed end, and at the other in bearings d d on the top of head C. The head B is also provided with bearings d (1, through which the shaft passes and in which it is journaled. Such bearings are adapted to slide freely along the shaft as the head is moved by the adj usti rig-screw.

Upon thcj ournal-stud E, attached to the end of the bed A, is journaled the pulley H, to be driven by a band from any desired source of power. Made rigid with this pulley is the gear I, which meshes with and drives the gear-wheel J on the end of shaft I), just beyond bearing d.

The bearings for the shaft on the heads B C are preferably made double, as shown, and up on the shaft between the two parts of the hearing on each head is the eccentric L for actuat- These eccentrics are feathered or splined on the shaft,as shown, the shaft being provided with a longitudinal feather or spline, Z, so that while the eccentric operating the punch in head B is caused to revolve with the shaft it can move freely along the same with the head. Each eccentric is provided with an eccentric strap or sleeve, L, formed with the arm L pivotally connected at its lower end with the block L, carrying the punch Z,attached to itin any of the well-known ways desired.

The dies 13" are keyed to and entirely supported by portions of the heads B and C, so that all strains due to the punching are entheir ends journaled in blocks It R, held in the brackets K K on the bed, so as to be capable of vertical movement in the same. Above the upper block of each pair is a plate, K, fastened to the top of the bracket and extending across the opening therein, in which are held the journal-blocks. A scrcw,7.,is tapped down through this plate, so as to limit with its lower end the amount of possible rise of the upper journal-block. On thejournal shafts or axles of the rollers beyond the journal-blocks at one end are the meshing small gears m a 0 p, respectively, having their teeth made .of such depth as to allow of movement of the upper rolls with reference to the lower ones, while the gears still remain in mesh.

On the shafts of the rollers N and P are the gear-wheels N and P, respectively, of equal diameters, with which gears the gear-wheel R, journaled on the portion ofthe screw which projects beyond the bed end, as described.

The toothed wheel R is made rigid with this wheel on the outer side thereof, and between wheel B and the hand-wheel S there is pivoted upon the shank or shaft of the screw S the arm T, carrying the pivoted double pawl U, adapted as it is swung one way or the other to engage the teeth of the wheel R on one side or the other of the arm, to drive the wheel It in either direction,as desired. The outer side of the pawl is made wedge-shaped, with the edge of the wedge substantially parallel to the axis of motion of the pawl and equidistant from the engaging ends ofthe pawl. In a suitable socket or recess in the arm T is the springpressed block or bolt t, bearing against the outer side of the pawl. Attached to the pivotshaft of the pawl is a thumb-wheel or head, N by which the pawl can be turned, as desired.

WVith the construction just described, if the pawl be turned to the middle point of its swing, as shown in Fig. 4, the block or bolt 23, bearing against the edge of the wedge, does not tend to swing the pawl in either direction, but holds it with its teeth or engaging ends both clear of the teeth of wheel 1%"; but if the pawl be swung in either direction from such position, the bolt, bearing upon one of the sides of the wcdge,will keep the pawl swung in that direction, and will operate with its yielding pressure to cause the pawl to engage the teeth on wheel R". The pawl can then be easily and quicklyset to drive the wheel in either direction or to be disengaged entirely from it, so that the arm T can be swung freely up and down without turning the wheel. \Vhen the pawl is set to engage the teeth of the wheel as the arm is moved, the wheel will obviously be turned intermittingly through a distance proportionate to the throw of the arm on it's pivot. This intermittent rotation is imparted through the connecting gearing described to the feed-rolls. The amount or extent of each partial revolution of the feed-rolls can then be regulated as desired to carry the sheet or blank between them the requisite distance by regulating the throw of the pawl-carrying arm.

To actuate the arm from the same shaft which drives the punches, I provide 011 the shaft D the crank-wheel V, having a crankpin,V, made adjustable diametrically across the wheel in the well-known way. A conneeting-rodflV, connects this crank-pin with a pin on the arm T. 3y adjusting the crankpin upon the wheel the throw of the rod V, and also that of the pawl-arm, can be adjusted as desired, to regulate the feed by the feedrolls, as hereinbefore set forth.

As the blanks or sheets of metal must be moved or fed along under the punches at the intervals when the punches are not in the dies or engaging the metal, the feed rolls should begin to move at a time when the punches have made half their rise and should finish their movement before said punches have made more than half their descent-that is, the feedrolls should complete their movement during a hal frevolution of shaft 1). The crank-wheel V is therefore set upon the shaft so that the diameter of the Wheel upon which the crank-v pin is situated, and along which it is adjustable, as described, will be at right angles to the longer radii of the eccentrics L L on the shaft. Vith this construction and arrangement of the parts, the arm T can be made to begin and complete that part of its throw which actuates the wheel It through the pawl or ratchet U during that part of the rotation of the eccentrics which raises the punch-bearing blocks through the latter half of their ascent and lowers them through half of their descent.

If it is desired to reverse the motion of the arm T with reference to the rotation of the shaft and motion of the eccentrics thereon, the crank-pin V can be moved over to the oppo site side of the center of the crank-wheel. The pawl U can then be turned to engage the wheel on the other stroke of the arm T, so as to rotate the feed-wheels in the opposite direction and at the proper times with reference to the movements of the punches.

If desired, springs can be used to press down the journal-boxes of the upper feed-rolls, but I find that the weight of such rolls. is sufficient to cause the rolls to take a firm enough hold upon the metal sheet or blank. I have also found that it is unnecessary to roughen the surfaces of the rolls, though that ean,of course, be done.

Any desired number of heads like head B can be placed on bed A, connected with the shaft D, and adjusted by screw S in the same ICO IIO

manner as head B. The heads are all, as those shown in the drawings, to be formed with suitable tables or platforms, upon which the l dies are keyed and supported, as described hereinbefore.

Obviously the shaft D can be grooved and the eccentrics be provided with a feather entering the groove, or the opposite construction can be used.

I do not limitmyself to any form or manner of connecting the eccentrics with the shaft to allow of their motion along it. y

In using my machine, the crank-pin having been adjusted to give the proper amount of movement to the feed-rolls each time through the connecting mechanism set forth, and the head B having been adjusted by screw S to bring it into such position that its punch will strike sheet or blank at the desired distance from the edge thereof, the sheet or blank is placed upon table X with its edge against the guiding or gage pins 00 a, and its forward end is inserted between the feed-rolls on the front side of the machine. lhe machine is then put in operation, and the sheet is fed by the rolls intermittingly forward, being advanced after each punching just the rightflistance for the next hole to be made by the punches.

Vhen the sheet or blank is engaged on both sides of the machine and the punches thereof by the feed-rolls, it is fed forward most accurately and positively.

I do not claim herein or desire to cover by my claims two pairs of feed-rolls, of which only one pair is driven directly by suitable driving mechanism, and the other pair is driven from the first pair by intermediate gearing.

Having thus described my invention, what I claim is 1. In combination with the bed and two or more heads supported thereon, the rotary shaft passing through suitable bearings on the heads, the punching mechanism supported entirely upon the heads and driven by connection with the shaft, substantially as and for the purpose described.

2. In combination with a suitable supportingbed, the fixed head on the bed, the rotary shaft journaled in bearings on such head, the standard, and the bearing thereon for the end of the shaft,the movable head supported on the bed, the bearings for the shaft on the latter head, and suitable punchingdevices carried and entirely supported by the heads and driven from the shaft, substantially as and for the purpose described.

3. In combination with a suitable bed, a head fixed thereon at or near one end, a standard at or near the other end, journal-bearings for the shaft on the head and standard, amovable head supported on the bed, bearings on this head through which the shaft passes, suitable punching devices carried and supported entirely by the heads and driven from the shaft, and an adj usting-screw engaging a portion of the movable head, substantially as and for the purpose described.

4. In a punching-machine, the stationary punching-head, the movable punching-head, the adjusting screw for the latter, and the pairs of feedrolls on opposite sides of the'heads, all in combination, substantially as and for the purpose described.

5. In combination with the toothed wheel for driving the feed-rolls of a punching-machine through suitable connecting-gearing, the pivoted arm, the double pawl pivoted thereon, provided with a wedge-shaped projection on its back or outer side, the spring-bolt engaging such side of the pawl, the connectingrod, the crank-disk, and the crank-pin thereon made adjustable diametrically across the disk, substantially as and for the purpose described.

In testimony that I claim the; foregoing I have hereunto set my hand this 15th day of September, 1885.

E. H. PHIPPS.

XVitnesses:

ALFRED N. WHEELER, Buu'ron MANsEIELD. 

